Payload

All webhook payloads follow a consistent top-level structure with event-specific data nested within the data object.

paymentIdstring

The payment link ID.

statusstring

The link status. Always "succeeded" for this event.

amountnumber

The collected amount in cents (100 = $1.00).

currencystring

The payment currency code.

descriptionstring

The payment description shown to the customer.

customerIdstring | null

The customer ID, or null when the link is not tied to a customer. Returns your externalId if you provided one when creating the customer, otherwise returns the Commet publicId.

invoiceIdstring

The one-time invoice generated for this payment.

invoiceNumberstring

The human-readable invoice number.

paymentTransactionIdstring

The payment transaction ID for the settled charge.

{
  "event": "payment_link.completed",
  "timestamp": "2026-06-18T14:05:00.000Z",
  "organizationId": "org_abc123",
  "mode": "live",
  "apiVersion": "2026-06-10",
  "data": {
    "paymentId": "pay_l1m2n3",
    "status": "succeeded",
    "amount": 5000,
    "currency": "usd",
    "description": "One-time onboarding fee",
    "customerId": "user_123",
    "invoiceId": "inv_n4o5p6",
    "invoiceNumber": "INV-0044",
    "paymentTransactionId": "ptx_q7r8s9"
  }
}

When this fires

When a customer pays a payment link on the hosted pay page and the charge settles. Commet generates a one-time invoice (invoiceType: "one_time_payment") and a payment transaction at the same time; the payload carries the invoiceId and paymentTransactionId.

This is the event to fulfill the purchase on — the money has been collected.

The event fires the same way whether your organization runs on the Stripe provider or the Commet sandbox provider.